<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div class="box" style="width: 40px; height: 40px; background-color: blueviolet">box</div>
<script src="./面试题/04-this面试题4.js"></script>

</body>
</html>
